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Mobile App Problem 39
An open-end manometer containing mercury was connected to a vessel holding a gas at a pressure of 720 torr. The atmospheric pressure was 765 torr. Sketch a diagram of the apparatus showing the relative heights of the mercury in the two arms of the manometer. What is the difference in the heights of the mercury expressed in centimeters?
Problem 40
An open-end manometer containing mercury was connected to a vessel holding a gas at a pressure of 820 torr. The atmospheric pressure was 750 torr. Sketch a diagram of the apparatus showing the relative heights of the mercury in the two arms of the manometer. What is the difference in the heights of the mercury expressed in centimeters?
Problem 41
An open-end mercury manometer was connected to a flask containing a gas at an unknown pressure. The mercury in the arm open to the atmosphere was \(65 \mathrm{~mm}\) higher than the mercury in the arm connected to the flask. The atmospheric pressure was 748 torr. What was the pressure of the gas in the flask (in torr)?
Problem 42
An open-end mercury manometer was connected to a flask containing a gas at an unknown pressure. The mercury in the arm open to the atmosphere was \(65 \mathrm{~mm}\) higher than the mercury in the arm connected to the flask. The atmospheric pressure was 748 torr. What was the pressure of the gas in the flask (in torr)?
Problem 45
A sample of nitrogen has a volume of \(880 \mathrm{~mL}\) and a pressure of 740 torr. What pressure will change the volume to \(550 \mathrm{~mL}\) at the same temperature?
Problem 46
A gas has a volume of \(255 \mathrm{~mL}\) at 725 torr. What volume will the gas occupy at 365 torr if the temperature of the gas doesn't change?
Problem 48
A gas has a volume of \(3.86 \mathrm{~L}\) at \(45^{\circ} \mathrm{C}\). What will the volume of the gas be if its temperature is raised to \(87^{\circ} \mathrm{C}\) while its pressure is kept constant?
Problem 49
A sample of a gas has a pressure of 854 torr at \(285^{\circ} \mathrm{C}\). To what Celsius temperature must the gas be heated to double its pressure if there is no change in the volume of the gas?
Problem 51
A sample of helium at a pressure of 745 torr and in a volume of \(2.58 \mathrm{~L}\) was heated from 24.0 to \(75.0^{\circ} \mathrm{C}\). The volume of the container expanded to \(2.81 \mathrm{~L}\). What was the final pressure (in torr) of the helium?
Problem 52
When a sample of neon with a volume of \(648 \mathrm{~mL}\) and a pressure of 0.985 atm was heated from 16.0 to \(63.0^{\circ} \mathrm{C}\), its volume became \(689 \mathrm{~mL}\). What was its final pressure (in atm)?
